Air filter systems and ventilation filters for industry, hospitals and HVAC – development, production and maintenance

Deltrian International SA

Fleurus (BE) · Kežmarok (SK) · Torrejón de Ardoz (ES) · Mosėdis/Skuodas (LT) · Tanger (MA) · Crailsheim (DE) · Würzburg (DE)New on Amplifa

1967Founded

450+Employees

13 Companies / 5 Production SitesGroup structure

8,000 m²New building Fleurus (Martinrou, 2023)

About Deltrian

Deltrian is a Belgian company founded in 1967 by Klaus Alexius, headquartered in Fleurus and specialized in air filtration. The product range includes pocket filters, compact and rigid filters, absolute filters (HEPA/ULPA), cartridge filters, high-temperature filters, molecular filtration, ATEX filters, Rolling Filters, Paint Arrestor, filter cells (including galvanized steel cells) as well as filter media roll goods. In addition, the company offers air purifier systems (LFC), CO₂ detectors, the Total Filtration Management (TFM®) maintenance contract including installation, replacement and audit, as well as Smart Filtering as a predictive maintenance solution with energy monitoring. Customers come from the automotive and paint shop sectors, pharma, cleanrooms, data centers, the food industry, hospitals, HVAC and general industry; user projects include, among others, Tour Majunga (VINCI Facilities), Gramitherm and Uvelia. The company employs more than 450 staff, operates 13 subsidiaries and 5 production sites worldwide with production facilities in Belgium, Lithuania, Slovakia, Spain and Morocco. In 2026, the British company Westbury Filtermation was acquired; in addition, Rivean Capital invested in Deltrian.

Site: Fleurus, Belgium
Processes: Air filter manufacturing (Pocket Filters, Compact/Rigid Filters, Absolute Filters HEPA/ULPA,, Assembly, replacement and maintenance of filtration systems (TFM® service), Cleaning, disinfection and maintenance of textile ducts, Air purifier systems (LFC, Air purifiers, CO₂ Detector), Total Filtration Management (TFM®) maintenance contract, Smart Filtering (predictive maintenance, energy monitoring), Consulting/audit, Installation and replacement of filter systems
Materials: Filter media, Galvanized steel (Galvanized Cells), Galvanized steel, Textile
Certificates: ISO 9001, ISO 14001, ISO 16890, EN 1822, EcoVadis Gold, VCA (TFM Service Activity), Atex, Eurovent Certified Performance, VCA (TFM Service, 2 stars), EcoVadis Gold (83/100)
Founded: 1967
Employees: 450+

01
Consulting and audit
02
Product development (R&D)
03
Filter manufacturing
04
Assembly and installation
05
TFM® maintenance and replacement
06
Smart Filtering monitoring (predictive maintenance)

Products and Technologies

Filter media

Supply of filter media roll goods (Filter Media Cut Rolls) and filter elements based on them

StVZ

Galvanized steel

Manufacture of galvanized filter cells (Galvanized Cells) in Tanger

Textile

Cleaning, disinfection and maintenance of textile air ducts

Locations

Fleurus (Martinrou)

Headquarters, production, logistics

Mosėdis / Skuodas

Production (Deltrian UAB)

Kežmarok

Production/sales (Deltrian Slovakia)

Torrejón de Ardoz

Production/sales

Tanger

Production (filters and galvanized cells)

Materials: Galvanized steel

Crailsheim

Sales (Deltrian Deutschland)

Würzburg

Sales (Deltrian Filtration GmbH)

Products

**Pocket Filters**Air filtration · HVAC and industry

**Absolute Filters HEPA/ULPA**Air filtration · Cleanroom and pharma

**High-Temperature Filters**Air filtration · Process industry

**Cartridge Filters**Air filtration · General industry

**Galvanized Filter Cells**Box filters · HVAC

**Paint Arrestor**Paint mist filters · Automotive paint shops

**Filter Media Roll Goods**Semi-finished product · Further processing

**LFC Air Purifiers**Air purification · Commercial buildings

Inside the production

Partnership with Rivean Capital (announced 2026)

Processes & technical limits

Processes	Tolerance	Max. part	Weight	Lot size	Materials
Air filter manufacturing (Pocket Filters, Compact/Rigid Filters, Absolute Filters HEPA/ULPA,Engineering	–	–	–	–	Filter media, galvanized steel sheet (Galvanized Cells)
Assembly, replacement and maintenance of filtration systems (TFM® service)Assembly	–	–	–	–	–
Cleaning, disinfection and maintenance of textile ductsSurface	–	–	–	–	Textile
Air purifier systems (LFC, Air purifiers, CO₂ Detector)Engineering	–	–	–	–	–

Additional services

Total Filtration Management (TFM®) maintenance contractSmart Filtering (predictive maintenance, energy monitoring)Consulting/auditInstallation and replacement of filter systemsCleaning, disinfection and maintenance of textile ductsR&DLogistics

Reference customers

VINCI Facilities (Tour Majunga)GramithermUvelia (with Air Ambiance)Air Ambiance

Standards and Certifications

Products are tested according to European and international standards and are certified, among others, to ISO 16890, EN 1822, Eurovent Certified Performance, CE, VDE, RoHS, TÜV, HACCP and Atex. The quality and environmental management systems are certified to ISO 9001 and ISO 14001, and the TFM® service to VCA (2 stars).

Evidence	Fleurus (Martinrou)
ISO 9001
ISO 14001
VCA (TFM Service, 2 stars)
EcoVadis Gold (83/100)
Eurovent Certified Performance
Atex

History

1967
Deltrian founded by Klaus Alexius
2017
Rudolf Svrcina joins the company as Managing Director of Deltrian Slovakia
2021
Timothée De Greift becomes CEO of Deltrian International
2022
Aurian de Briey becomes CFO; expansion into North Africa with Deltrian Africa (Tanger)
2023
Rudolf Svrcina takes over the leadership of Deltrian International; new 8,000 m² site in Fleurus (Martinrou)
2025
Klaus Alexius, founder of 1967, passes away; EcoVadis Silver (77%)
2025
Rivean Capital invests in Deltrian (announced 06/2026)
2026
EcoVadis Gold (83/100, top 5% worldwide); acquisition of Westbury Filtermation; TFM Belgium VCA 2-star certified